KR20060058985A - Float type level meter using the encoder - Google Patents

Abstract

The present invention relates to a float level gauge using an encoder, and more specifically, to convert a linear motion of a reservoir (water level) such as a reservoir into a circular motion by a level gauge pulley to measure a water level by an optical encoder. In order to measure mechanically accurate water level without being affected by temporary water fluctuation such as blue wave, the gap adjustment part is formed in the coupler that transmits the rotational force of the water gauge pulley to the encoder. The rotation of the water gauge pulley according to the water level change is idled by the gap adjustment part so that it is not transmitted to the encoder, thereby reducing the error of the water level measurement, and flexibly adjusting the gap gap according to the characteristics of the reservoir or the magnitude of the wave. It is about float level gauge which can be done.

Float level gauge, encoder, timing belt, play coupler

Description

Float type level gauge using encoder {FLOAT TYPE LEVEL METER USING THE ENCODER}             

1 is a schematic perspective view of the main part of the water gauge according to the present invention,

2 is a front view of the assembly of the water gauge according to the present invention;

Figure 3 is an exploded perspective view of a part of the main portion of the rotational force transmission system for transmitting the rotational force of the pulley to the water gauge according to the present invention,

4 to 6 is a rear perspective view of each configuration of the variable play coupler provided in the rotational force transmission system of the pulley,

7 to 9 is an assembled state of the variable play coupler according to the present invention,

10 and 11 is a front and rear state diagram according to the clearance adjustment of the variable play coupler,

12 is a state diagram used in the water gauge according to the present invention.

※ Brief description of symbols for the main parts of the drawings

5: wire 7: float

10: pulley 20: accelerator gear

21, 22, 23: power transmission shaft 24, 25, 26, 27: 1st, 2, 3, 4 timing gear

28, 29: belt 30: variable play coupler

31: primary coupler 32: clearance adjustment

33: secondary coupler 34a: guide projection

34b: fitting 34c: screw fixing

35: clearance adjustment part 35a: slide part

36: guide surface 37: through hole

38: screw fixing groove 39: fixing screw

40: encoder 45: A / D converter

50: water level display device A: water level meter

B: Base member C: Bracket

The present invention relates to a float level gauge using an encoder, and more particularly, the rotational speed of the pulley is accelerated at a constant speed by the accelerator gear to be transmitted to the encoder, so that the accurate level value can be detected when measuring the water level, and the blue of the water surface. The present invention relates to a float level gauge using an encoder provided with a coupler having a clearance gap so that the flow amount is not transmitted to the encoder during a temporary flow.

In the conventional dams and reservoirs, water level measurement is performed using a water level meter for efficient management of low water volume, and a float type water level meter is mainly used as a conventional water level meter used for such a water level measurement.

That is, in the case of the float type water gauge used in the prior art, a float which is elevated according to the change of the water level at the water surface, a pulley which is connected to the float and is rotated according to the elevation of the float, and the rotational speed of the pulley is a constant electrical signal. It consists of an encoder for sensing, a converter for converting and displaying the signal of the encoder into an identifiable value and configured to measure and observe the reservoir or dam level.

However, in the case of the float level gauge using the conventional encoder, the variation of the water level is very large due to the structure of the mechanism directly linked to the pulley shaft, despite the precise measurement using the encoder. It is difficult to obtain accurate data of the data, resulting in the effectiveness of the water level data being halved.

In addition, in the case of the conventional float-type water gauge, the water gauge is sensitive to wind, lunar attraction, and other causes, so that the water level fluctuations appear despite the fact that there is no change in the water level, thereby ensuring accurate and reliable water level data. appear.

The present invention was devised to solve the problems of the above-described float type water meter using the encoder, and the present invention is sensitive to the water level fluctuations caused by other environmental and environmental factors rather than the actual cause of the water level fluctuation. The purpose of the present invention is to provide a float level gauge using an encoder which enables to ensure reliable level data while preventing reliable level observation data.

In order to achieve the above object, the float level gauge using the encoder according to the present invention is a float floating on the surface of the water, and a wire connected to the float to be rotated by the lifting and lowering of the float according to the change of the water level and the pulley installed on the base member; And an encoder, a converter, and a water level display device configured to measure the amount of rotation of the pulley according to the ascending and descending of the float, and a water level display device. One side of the pulley has a power transmission shaft connected to the center of the pulley. It is installed in the acceleration gear unit is provided with a plurality of timing gears having different gear ratios sequentially connected to the belt so that the rotational amount of the pulley is accelerated at a constant speed ratio and transmitted to the encoder, the final timing gear of the encoder and the accelerator gear unit is provided The transfer shaft has a pool of instantaneous flow of water Jidoe rotation amount is made of a separate cross-coupled structure capable to prevent the transfer to the encoder contact portions engaging each other is made of a fit of the characteristic structure is the clearance provided to adjust the variable additional clearance coupler having a predetermined space provided.

In particular, the variable play coupler is provided on the power transmission shaft of the final timing gear side and the guide coupler is provided on both sides symmetrically with each other the guide projections having a predetermined length in the circumferential direction is provided with a screw coupling hole on one side thereof; And a secondary coupler installed on each side of the encoder so as to be symmetrical to each other so that the fitting protrusions protruding at a predetermined length on the surface opposite to the primary coupler are symmetrical to each other, the primary coupler and the secondary coupler. The clearance adjustment part provided with a slide part configured to be seated on the guide surfaces on both side guide protrusions of the primary coupler and then screwed to adjust the gap between the gap adjustment part between the fitting protrusion of the secondary coupler and the guide protrusion of the primary coupler. The fittings are installed in consideration of the flow rate of the surface of the water, which varies depending on the environment of the water level measurement area such as reservoir or dam. Adjust to make precise water level measurement.

In addition, the clearance adjuster is coupled to the primary coupler and is recessed by a predetermined depth in the rotational direction at the outer peripheral side of the slide portion provided on both sides symmetrical to the outer periphery so as to facilitate the clearance adjustment to a certain displacement. A screw fixing part having a length of is provided, and the screw fixing part is seated on the outer peripheral edge of the guide surface of the guide coupler of the primary coupler, and then rotates the clearance adjuster by a certain angle within the displacement of the guide surface after release of the fixing screw. It has a characteristic structure in which a through hole is formed to easily adjust the gap between the clearance adjusting part.

Hereinafter, the configuration of a float type water meter using an encoder according to the present invention will be described in detail with reference to the accompanying drawings.

That is, the float-type water gauge using the encoder according to the present invention is devised to overcome the disadvantages of the conventional water level meter, the detailed description of the present invention omits the description of the known art in the characteristic configuration of the present invention Only the details will be described.

Fig. 1 shows an external perspective state at the time of assembling the features of the present invention in a float level gauge using an encoder according to the present invention, and Fig. 2 shows a wire 5 wound around the pulley 10, and the wire Float 7 is coupled to one end of (5) schematically shows a front view of the A / D converter 45 and the water level display device 50 is coupled to the encoder 40 side, Figure 3 is shown in FIG. It is an extract showing the separation of some components to facilitate the rotational force transmission system of the pulley (10).

Float-type water gauge (A) using the encoder according to the present invention, as shown in Figure 1, is fixedly supported by a plurality of brackets (C) on one side of the upper surface of the base member (B) pulley rotatably freely ( 10) is installed, the float (7) floating on the water surface on one side of both ends of the wire in the state in which the wire (5) of a predetermined length is wound on the outer periphery of the pulley (10), The opposite side of the wire 5 is configured to hang a weight (not shown) of a constant weight, installed on one side of the pulley 10 to measure the amount of rotation of the pulley 10 to measure the water level of the reservoir or dam The encoder 40 connected to the power transmission shaft, the A / D converter 45 for converting the electrical signal detected by the encoder 40, and the value converted by the A / D converter 45 are displayed. Including the basic configuration that the water level display device 50 is installed Eojinda.

The present invention including the above-described basic configuration, in particular, the accelerator is provided between the pulley 10 and the encoder 40 to accelerate the amount of rotation of the pulley 10 at a constant ratio to send a signal to the encoder 40 The fisherman 20 has a characteristic, and the amount of rotation of the pulley 10 in accordance with the flow amount during the moment of vertical movement of the float due to the flow (fluctuation) of the water at the end of the accelerator gear 20 encoder 40 It includes a characteristic configuration provided with a variable play coupler (30) to prevent transmission to.

The accelerator gear 20 has a plurality of large and small timing gears 24, 25, 26, 27 having different diameters are installed on separate power transmission shafts 21, 22, 23 sequentially. It is connected to the belts 28 and 29 to further accelerate the speed of the small amount of pulley 10 to provide an increased speed to the power transmission shaft 23 to which the encoder 40 is connected, thereby increasing the fine speed through the increased speed. It is configured to measure the amount of rotation.

The configuration of the accelerator gear 20 will be described in more detail with reference to FIG. 3. A gear having a predetermined pitch on the outer circumference is processed on a power transmission shaft 21 installed at a central portion of the pulley 10 so that the pulley ( The first timing gear 24 is installed to be rotated integrally with 10), and is connected to the first timing gear 24 and the belt 28 to be accelerated relative to the speed of the first timing gear 24. The second timing gear is formed at a tip of the power transmission shaft 22 formed in a diameter smaller than the first timing gear 24 so as to be rotated to be fixed to one bracket C at the lower end of the first timing gear 24. (25) is provided, a gear having a larger diameter than the second timing gear (25) on the same power transmission shaft (22) provided with the second timing gear (25) and having a predetermined pitch on the outer circumference thereof. The third timing gear 26 is installed continuously, and the third timing gear 26 and the belt 29 As a result, the rotational force of the pulley 10 is increased to a smaller diameter than the third timing gear 16 at one end of the shaft 23 so that the rotary force of the pulley 10 is finally transmitted to the power transmission shaft 23 on which the encoder 40 is installed. A fourth timing gear 27 for transmitting water is provided.

As such, the accelerator gear unit 20 including a plurality of timing gears having different gear numbers does not have a large amount of rotation of the pulley 10 according to the elevation of the water level, so that it is accelerated and increased to a higher number of revolutions, thereby increasing the number of revolutions. It is designed to allow precise measurement of the water level and clearance adjustment.

On the other hand, another feature of the present invention is installed between the fourth timing gear 27 and the encoder 40 on the power transmission shaft 23, the fourth timing gear (10) is finally transmitted to the rotational force of the pulley 10 ( In order to prevent the amount of rotation transmitted from 17) to the encoder 40 to be transmitted within a predetermined range, a variable play coupler 30 having a structure in which a play adjustment part, which is a predetermined free space part, may be provided.

The variable play coupler 30 is not accompanied by a change in the actual amount of water, such as wind, lunar attraction, and other environmental factors, instantaneously in consideration of the period in which the rise and fall of the water level of the reservoir or the dam is gentle over a certain time. When the float 7 is moved up and down due to the wavy fluctuations of the water surface, the pulley 10 is rotated. At this time, the rotational force (quantity) of the pulley 10 is not transmitted to the encoder 40 to ensure accurate quantity data. Configured to enable it.

The variable play coupler 30 includes a primary coupler 31 installed on the power transmission shaft 23 on the fourth timing gear 27 side and a secondary coupler on the power transmission shaft on the encoder 40 side. (33) is installed and interlocked with each other in a structure capable of mutual coupling, in particular, the primary coupler 31 and the secondary coupler 33 are provided with guide projections 34a and fitting projections 34b, respectively, projections on both sides. In the free space portion of one side that is interlocked with each other is fitted with a gap adjuster 32 coupled to the inner surface of the primary coupler 31 is configured to adjust the gap of the gap adjuster 35.

In order to explain in more detail the characteristic shape and structure of the variable play coupler 30, the rear perspective state of the primary coupler 31, the play adjuster 32, the secondary coupler 33 is shown in FIGS. Is shown.

As shown in the figure, the variable play coupler 30 composed of the primary coupler 31, the secondary coupler 33, and the play adjuster 32 has a power transmission shaft on the side of the final timing gear 27 ( 23, the primary coupler 31 is provided with a screw fixing groove 38 to which the fixing screw 39 is coupled to its rear surface, and the guide surface 36 formed to have a predetermined step with the outer circumference of the coupler. The provided guide protrusions 34a are symmetrically formed on both sides of the left and right sides thereof, and one end of the guide surface 36 is substantially perpendicular to the guide surface 36 having a predetermined step with the outer circumference so as to have the same radius as the outer circumference of the coupler. Processing is formed.

In addition, the secondary coupler 33 is provided on the power transmission shaft 23 on the encoder 40 side and the fitting protrusion 34b protruding forward at a predetermined length to the front surface in contact with the primary coupler 31. Are each formed on both sides so as to be symmetrical with each other.

In addition, the clearance adjuster 32 inserted between the primary coupler 31 and the secondary coupler 33 is a guide surface 36 of the guide protrusion 34a provided in the primary coupler 31. When it is seated on the outer peripheral side of the guide surface 36 is integrally coupled with the primary coupler 31 by the fixing screw 39, when the secondary coupler 33 is coupled to the rear of the play adjuster 32 The gap between the clearance adjustment part 35 formed between one end of the clearance adjustment clamp 32 in which the fitting protrusion 34b of the secondary coupler 33 is located and one end of the guide protrusion 34a of the primary coupler 31 is adjusted. It has a characteristic structure and shape that can be adjusted.

That is, the clearance adjuster 32 is coupled on the same power transmission shaft as the primary coupler 31, and is seated on the guide surface 36 of the primary coupler 31 and then slid left and right within a predetermined rotational displacement. A predetermined displacement of the slide portion 35a is provided symmetrically on both the left and right sides, and a screw fixing portion 34c having a predetermined length in the circumferential direction is recessed in the center of the slide portion 35a, and the screw fixing portion 34c, the fixing screw in the screw fixing groove 38 formed in the guide surface 36 after the slide portion 35a is positioned on the outer circumference of the guide surface 36 of the guide protrusion 34a of the primary coupler 31. 39 is coupled to the through hole 37 for firmly fixing the slide portion (35a) on the guide projection (34a).

In particular, the through hole 37 slides 35a on the outer circumference of the guide surface 36 after relaxing the fixing screw 39 in a state where the play adjuster 32 is fixed to the primary coupler 31. ) Is rotated by a predetermined angle within a predetermined allowable range, that is, in the free space portion of the clearance adjusting portion in the circumferential direction so as to easily adjust the space between the free space portions to which the fitting protrusion 34b of the secondary coupler 33 is coupled. A certain length is formed.

The assembled state of the variable clearance coupler 30 configured as described above is shown in detail in FIGS. 7 to 9.

First, as shown in FIG. 7, the play adjuster 32 is inserted into a rear surface of the guide coupler 34a of the primary coupler 31, but the slide part 35a of the play adjuster 32 is located above. Fixing screw 39 through the through hole 37 of the screw fixing portion 34c formed in the circumferential direction on the outer circumferential side of the slide portion 35a after being positioned to be seated on the upper surface of the guide surface 36 of the guide protrusion 34a. The fixing screw 39 is fixed to the screw fixing groove 38 provided on the upper surface of the guide surface 36 of the guide protrusion 34a to integrally couple the play adjuster 32 to the primary coupler 31.

In the state of FIG. 8 in which the primary coupler 31 and the play adjuster 32 are integrally coupled to each other, the second coupler 33 is fitted to the back of the play adjuster 32. 33, the coupling of the primary coupler 31 and the play adjuster 32 are coupled to the outer end of the slide portion 35a of the play adjuster 32 and the guide protrusion 34a of the primary coupler 31. The secondary coupler 33 is coupled to the clearance adjuster 32 by closely coupling the secondary coupler 33 so that the fitting protrusion 34b is fitted into the space portion of the clearance adjustment unit 35 formed between the one end portion. It is connected to the primary coupler 31 (see FIG. 9), and the variable play coupler 30 is coupled to the rotational force transmitted from the pulley 10 to the primary coupler 31 and the secondary coupler 33. It is configured to enable power transmission to the encoder 40 side through.

The variable gap coupler 30 according to the present invention, in which the primary coupler 31, the gap adjuster 32, and the secondary coupler 33 are finally coupled, is configured as shown in FIG. 10. Since the clearance adjustment part 35 which has a predetermined clearance part H is formed between the outer end of the fitting protrusion 34b of 33, and the outer end of the guide protrusion 34a of the primary coupler 31, it is continuously The rotational force transmitted from the pulley 10 side by the interval of the free space portion H during the instantaneous flow of water is not the time of actual water fluctuation when the quantity of the reservoir or the dam increases or decreases. Allows clipping to be done before passing to.

Meanwhile, when the fixing screw 39 coupled to the upper surface of the guide protrusion 34a of the primary coupler 31 is relaxed, the play adjuster 32 coupled to the outer circumference of the guide surface 36 of the guide protrusion 34a is provided. When the slide part 35a is slightly loosened, the clearance adjuster 32 can move left and right within the displacement of the through hole 37, and after slightly rotating the clearance adjuster 32 to one side. When the loosened fixing screw 39 is firmly coupled to the guide surface 36 of the guide protrusion 34a, the loosening adjuster 32 is loosely coupled with the primary coupler 31 again. The fitting protrusion 34b of the secondary coupler 33 fitted to the outer end of the slide portion 35a also moves in the same rotational direction as the movement amount of the clearance adjuster 32 due to the partial rotation of the clearance adjuster 32. And the first free space portion is reduced to H-> h, and the rotational force transmitted from the pulley 10 side in this free space portion h Clipping (clipping) This will be written before being passed to the second coupler (33).

That is, according to the magnitude of the flow of the surface of the reservoir or the dam, the water gauge according to the present invention can adjust the displacement in which the clipping of the variable clearance coupler 30 occurs so that it can be installed appropriately in the surrounding conditions of the reservoir or dam actually installed. It is made of a structure that allows precise water level measurement.

On the other hand, the operation and action of the float-type water gauge A using the encoder according to the present invention having the above-described configuration will be described below.

The pulley 10 of the hydrometer according to the present invention has a size of a circumference of 1m, so that the pulley 10 wound around the wire 5 is rotated in accordance with the vertical movement of the float 7 and the weight according to the change of the water level. When the water level is 1m change, the pulley is configured to make one revolution.

In addition, the accelerator gear portion 20 configured to accelerate and increase the number of revolutions as the pulley 10 rotates may include two sets of timing gears 24, 25, 26, 27, and a belt 28, 29. The timing gear ratio of the first and second timing gears 24 and 25, which are the first set, is 10: 3, and the timing gear ratio of the third and fourth timing gears 26 and 27, which are the second set, It is composed of a gear ratio of 9: 3 so that the rotational force (amount) of the pulley 10 is finally rotated at 10 times acceleration and increased rotational speed to the power transmission shaft 23 connected to the encoder 40, and thus the variable play coupler 30 Is transmitted to the encoder 40.

 Therefore, the rotation speed of the power transmission shaft 22 input to the encoder 40 during one rotation of the pulley 10 according to the 1 m change in water level is accelerated to 10 times the gear ratio, and the 10 revolutions are transmitted. One rotation of 40 makes it possible to measure a change in water level of 10 cm (100 mm), which is 1/10 of the number of revolutions of the pulley 10.

On the other hand, the variable play coupler 30 provided between the encoder 40 and the final timing gear 17 is configured to vary the play by up to 1/10 of the play, unlike the general coupler, the variable play coupler Since the angle change amount according to one rotation (displacement amount 10cm) of (30) is 360 °, the rotation displacement amount to 36 ° of the variable play coupler 30 corresponds to 10mm, which is 1 cm.

 That is, in the conventional water gauge, the rotational force (volume) of the pulley is input to the encoder as it is through the coupler, so that one rotation (100cm, 360 °) of the pulley becomes one rotation (100cm, 360 °) of the encoder input shaft and 0.36 ° per mm. It is very difficult or impossible to control the rotational displacement by angle in the encoder.

However, in the case of the water gauge according to the present invention, as described above, the rotational force (amount) of the pulley is transmitted to the encoder 10 times as much as the rotational force (amount) passes through the accelerator gear portion 20, so that the rotational speed (number) of the pulley is changed to one rotation on the encoder side. According to the displacement amount and rotation angle of 10cm, 360 °, the rotation angle 360 ° for one revolution on the encoder side is 36 ° / 1cm, 3.6 ° / 1mm. The level change value can be detected by the water level meter.

 The water gauge according to the present invention constructed and operated in this way can adjust the spacing of the clearance adjusting part according to the size of different flows according to the geographic position of the reservoir or the dam so that the water surface of the reservoir or the dam where the water gauge is installed is blue. Even when the float 7 is lifted to rotate the pulley 10, the water level fluctuation value due to the surface flow is not transmitted to the encoder 40, but the actual quantity fluctuation that the quantity increases or decreases continuously with a certain period. Only the water level is measured by the encoder so that the water level change value due to instantaneous flow is excluded from the variable play coupler so that it is not transmitted to the encoder, enabling precise measurement of the water level, thereby improving the reliability and precision of the water level observation data. Provide water level observation data to ensure efficient water management.

As described above, the float-type water gauge using the encoder according to the present invention makes the float rise and fall within a predetermined range during flow due to a wave or the like in which the actual flow rate does not change when measuring the water level at a dam or reservoir or other water level station. It is possible to provide accurate water level measurement data by measuring and adjusting the measurement unit to 1mm units which is much more accurate than the conventional one by preventing the encoder from transferring the encoder and accelerating the rotation of the pulley to the encoder. In this way, it is possible to improve the reliability of the weighing data such as low water, inflow, and discharge through the measured data.

Claims (3)

Float floating on the water surface, the wire connected to the float is wound around the float so as to move up and down the float according to the change in the water level, and the amount of rotation of the pulley according to the elevation of the float to measure the rotation of the reservoir or dam In a float level meter using an encoder configured to measure the water level, and an encoder provided with a converter and a water level display device, It is provided on the power transmission shaft provided in the central portion of the pulley is provided with an accelerator gear unit is provided with a plurality of timing gears are sequentially connected to the belt so that the rotational amount of the pulley is accelerated and transmitted to the encoder at a constant speed ratio, The power transmission shaft between the accelerator gear unit and the encoder receiving power from the accelerator gear unit has a predetermined clearance between the connecting parts interlocked with each other to prevent the rotational amount of the pulley according to the instantaneous flow of water from being transmitted to the encoder. Float type water gauge using an encoder, characterized in that the variable play coupler provided with a play adjustment unit is installed. The method of claim 1, The variable play coupler may include a primary coupler installed at the final timing gear side, a secondary coupler installed at the encoder side, and a fitting between the primary coupler and the secondary coupler, and the secondary coupler may be installed at the secondary coupler. When the power is transmitted to the coupler, it consists of a clearance adjuster for adjusting the gap between the gap adjustment portion formed between the coupler of the coupler, the one side of the primary coupler on the inner circumference having the outer periphery of the coupler and a predetermined step Guide protrusions each having a predetermined displacement in a direction and having a guide surface on which one or more screw fixing grooves are formed, and are formed to face opposite sides, and protrude at a predetermined height on one side of the secondary coupler to guide the protrusions of the primary coupler. The fitting projections inserted therebetween are installed at both sides with a predetermined height, and the clearance adjusting rod is slid on the guide surface of the primary coupler. Is fixed so as to be formed so as to protrude in the opposite direction to each slide portion having a predetermined displacement in the circumferential direction of one side so as to adjust the play between one end of the guide projection of the primary coupler and the fitting projection of the secondary coupler Float type water level meter using an encoder. The method of claim 2, The slide portion of the clearance adjustment clamp is formed with a screw fixing machined to a predetermined depth in the rotational direction on the outer periphery, the screw fixing portion is fixed to the slide portion seated on the guide surface of the guide projection with a fixed screw and within the displacement of the clearance adjustment portion Float type water gauge using an encoder, characterized in that the through-hole of a certain displacement is formed to enable the movement of the play adjuster.

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